Who are you?

Does anyone else ever think that no-one probably knows the real you?
Do you think you show your real self to the world, or some kind of persona?
Do you think one person experiences a different you that you show to someone else?
Do you think that you're even your true self when you're alone in your bedroom?
Maybe the less we show of our real selves to other people, the more of ourselves we lose.
Maybe you'll never know the real you again.